<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
</head>
<body>
    <script>
        "use strict";
        var div = document.createElement("div")
        div.style = "width: 100%"
        div.innerHTML="success"
        document.body.appendChild(div)
    </script>
</body>
</html>